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摘要
The present paper addresses the radical scavenger properties evaluation of different extracts from plants and berries, in order to prove the feasibility of electrochemical approach to such an application. The radical scavenging properties of extracts of acclimatised Lonicerae caerulea fructus, Myrtilli fructus, Equiseti herba, Millefolii herba and Medicagini herba were evaluated using as model a long lifetime free radical 2,2'-diphenyl-1-pycrilhydrazil (DPPH). An electro-analytical method (square-wave voltammetry) devoted to the evaluation of extract properties was developed and results were confirmed using spectrochemical methods. The results were expressed in Trolox equivalent radical scavenging activity on mg dry base. In the case of Lonicera caerulea fruits the results (12385.63 mu mol TE/mg dry fruit for aqueous extract; 12455.27 mu mol TE/mg dry fruit for alcoholic extract and 3918.05 mu mol TE/mg dry fruit for total extract) proved that berries from acclimatised plant provide a high content of antioxidants.
- 出版日期2011-1
- 单位北京生命科学研究所
